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/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*/
/* ide.c - ide support functions */
#include <common.h>
#ifdef CONFIG_CMD_IDE
#include <ata.h>
#include <ide.h>
#include <pci.h>
#define IT8212_PCI_CpuCONTROL 0x5e
#define IT8212_PCI_PciModeCONTROL 0x50
#define IT8212_PCI_IdeIoCONFIG 0x40
#define IT8212_PCI_IdeBusSkewCONTROL 0x4c
#define IT8212_PCI_IdeDrivingCURRENT 0x42
extern struct pci_controller hose;
int ide_preinit (void)
{
int status;
pci_dev_t devbusfn;
int l;
status = 1;
for (l = 0; l < CONFIG_SYS_IDE_MAXBUS; l++) {
ide_bus_offset[l] = -ATA_STATUS;
}
devbusfn = pci_find_device(PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_SII_680, 0);
if (devbusfn == -1)
devbusfn = pci_find_device(PCI_VENDOR_ID_ITE,PCI_DEVICE_ID_ITE_8212,0);
if (devbusfn != -1) {
u32 ide_bus_offset32;
status = 0;
pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0,
&ide_bus_offset32);
ide_bus_offset[0] = ide_bus_offset32 & 0xfffffffe;
ide_bus_offset[0] = pci_hose_bus_to_phys(&hose,
ide_bus_offset[0] & 0xfffffffe,
PCI_REGION_IO);
if (CONFIG_SYS_IDE_MAXBUS > 1) {
pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_2,
(u32 *) &ide_bus_offset[1]);
ide_bus_offset[1] &= 0xfffffffe;
ide_bus_offset[1] = pci_hose_bus_to_phys(&hose,
ide_bus_offset[1] & 0xfffffffe,
PCI_REGION_IO);
}
}
if (pci_find_device (PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_8212, 0) != -1) {
pci_write_config_byte(devbusfn, IT8212_PCI_CpuCONTROL, 0x01);
pci_write_config_byte(devbusfn, IT8212_PCI_PciModeCONTROL, 0x00);
pci_write_config_word(devbusfn, PCI_COMMAND, 0x0047);
#ifdef CONFIG_IT8212_SECONDARY_ENABLE
pci_write_config_word(devbusfn, IT8212_PCI_IdeIoCONFIG, 0xA0F3);
#else
pci_write_config_word(devbusfn, IT8212_PCI_IdeIoCONFIG, 0x8031);
#endif
pci_write_config_dword(devbusfn, IT8212_PCI_IdeBusSkewCONTROL, 0x02040204);
/* __LS_COMMENT__ BUFFALO changed 2004.11.10 changed for EMI */
pci_write_config_byte(devbusfn, IT8212_PCI_IdeDrivingCURRENT, 0x36); /* 10mA */
/* pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x09); */ /* 4mA */
/* pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x12); */ /* 6mA */
/* pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x24); */ /* 6mA,2mA */
/* pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x2D); */ /* 8mA,4mA */
pci_write_config_byte(devbusfn, PCI_LATENCY_TIMER, 0x00);
}
return (status);
}
void ide_set_reset (int flag) {
return;
}
#endif /* CONFIG_CMD_IDE */
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